Liz and Mary Cheney, the daughters of former Vice President Dick Cheney, continued their feud over gay marriage this week, taking it public on TV and social media.

Liz Cheney, the elder sister who is running in the GOP primary for U.S. Senate in Wyoming, first spoke out about her opposition to same-sex marriage in August, when she issued a statement saying, "I am strongly pro-life and I am not pro-gay marriage."

"For the record, I love my sister, but she is dead wrong on the issue of marriage," she wrote on the social network. "Freedom means freedom for everyone. That means that all families — regardless of how they look or how they are made — all families are entitled to the same rights, privileges, and protections as every other.

"Liz has been a guest in our home, has spent time and shared holidays with our children, and when Mary and I got married in 2012 — she didn't hesitate to tell us how happy she was for us," Poe wrote. "To have her now say she doesn't support our right to marry is offensive to say the least. I can't help but wonder how Liz would feel if as she moved from state to state, she discovered that her family was protected in one but not the other."

Though one of his daughters strongly opposes it, Dick Cheney backed same-sex marriage sanctioned by the state in 2009, saying, "People ought to be free to enter into any kind of union they wish, any kind of arrangement they wish."